Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual corrida que o jóquei de D. Nikolic está participando?
 ###Tabelas: CREATE TABLE race_record (race_record_id AUTO_INCREMENT PRIMARY KEY, Result VARCHAR, Date VARCHAR, Race VARCHAR, Venue VARCHAR, Group VARCHAR, Distance VARCHAR, Weight (kg) INT, Time VARCHAR, Jockey VARCHAR, Winner/2nd VARCHAR) CREATE TABLE londonderry_and_lough_swilly_railway (londonderry_and_lough_swilly_railway_id AUTO_INCREMENT PRIMARY KEY, Type VARCHAR, Fleet numbers VARCHAR, Quantity made INT, Manufacturer VARCHAR, Date made VARCHAR, Date withdrawn VARCHAR) CREATE TABLE world_championship_indy_500_summary (world_championship_indy_500_summary_id AUTO_INCREMENT PRIMARY KEY, Season INT, Cars Entered INT, Winning Driver VARCHAR, Second Driver VARCHAR, Third Driver VARCHAR, Race Report VARCHAR) CREATE TABLE 2009_season_schedule (2009_season_schedule_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Opponent VARCHAR, Home / Away VARCHAR, Score VARCHAR, High points VARCHAR, High rebounds VARCHAR, High assists VARCHAR, Location/Attendance VARCHAR, Record VARCHAR) CREATE TABLE active_teams (active_teams_id AUTO_INCREMENT PRIMARY KEY, Tournament Appearances INT, Team VARCHAR, League VARCHAR, Wins INT, Final Losses INT, Semi-Final Losses INT, Fourth-Place* INT, Final Win % VARCHAR, Years of appearance VARCHAR)  
SELECT Race FROM race_record WHERE Jockey = d. nikolic